Miniature Incandescent Bulb, Trade Number 6PSB, Bulb Shape T2, Bulb Base Type Tel. Slide No. 5, 6 Voltage, Telephone, 1.0 Watts, Bulb Type Miniature, 140mA Bulb Amps, Average Bulb Life 5000 hr., 115 Lumens, Incandescent
Source 6 VAC